1. Disconnect the ground cable from battery.
2. Remove the reservoir tank. 
3. Lift up the vehicle.
4. Remove the under cover.
5. Remove the DPF pressure difference sensor.
(1) Disconnect the DPF pressure difference sensor hoses (A) and (B).
(2) Disconnect the DPF pressure difference sensor connector (C).
(3) Remove the bolts (D) and remove the DPF pressure difference sensor.
